Improvement in filters



lzhtith Seite me offra.

- GEORGE" CURT IS, rOF SPRINGFIELD, MASSACHUSETTS, ASSIGNOR TO HIM- SELF AND BIGELOW, OF SAME PLACE.

Letters Patent No. 109,592, dated November 29, 1870.

IMPROVEMENT IN FILTERS.

The Schedule referred to in these Letters Patent and mldng part of the same.

To all whom it nul-y concern:

Be it known that I, GEORGE CURTIS, of Springfield, Massachusetts, have invented a new and useful Improvement in Filters; and I- do hereby declare that the following is a clear and exact description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon.

In the drawing- Figure I is a side sectional view; and

Figures II and. III, detail views of parts of my invention.

In construction, I form my filter of a metal cover, B, semiglobnlar in shape, and which is screwed into the metal base A at a.

Thelower part ofthe filter A decreases in size from the bottom of the cover B to its mouth c, making a shoulder upon which rests a ine-Wire sieve, D, having a metalrim, rl.

Upon thisv rim fits the flange of the hollow semiglohnlar piece of nic-tal E, containing the compressed sponge F.

'lhis covering to the sponge has a number of minnte apertures, e e e Sec., for the passage of the fluid in process of tilt-ration, and being made considerably smaller in perimeterthan the outside piece' B of the ilter, leaves a fluid chamber, M.

Immediately upon the top of the case E, and heneath the neck G of the lter is placeda button or knob, I. The neck G is made, like a coupling, so that it can be readily attached to various-sized nozzles of bibb faucet or hydrant.

To be put together, the case E holding the sponge is placed over the sieve, the flange of the case E titting over the rim d of the sieve, (being the same` width,) a rubber Washer or other packing is then placed over the flange to prevent any leakage from the chamber M, and the outside cover B is screwedholes e e e, 85e., to the sponge, so that there can be' no percussion to force b'ers and particles of' matter in the liquid, into the apertures to clog them, but finding its way by its own weight it passes through the coinpressd sponge and finally through the fine wire sieve, comingvout of the month thoroughly filtered. v

The advantage I obtain in the use of a sponge in a filter is, that the elastic fibers run in all directions, and it may be compressed so as to lter more or less closely, whereas felt and other materials now in use permit the liquid to Wear channels through thezn, being elasticin only one direction.

rEhe advantages of my device are its cheapn'ess and simplicity, as it can not get out of order, and can be taken aparteasily to cleanse, and can at once be attached to hydrant bibb, 85e.

N ow 4having described Amy invention,

IVhat I Aclaim as new, and desire to secure by Letters Patent, is v 'Ihe perforated detlecting case, with button and sieve, inclosing a percolating medium, the parts `being contained within the case formed of the two parts, as set forth and described.

' GEO. CURTIS.

XVitnesses.:

J. E. MCINTIRE, H. B. EAoHns. 

